fromtypingimportListimportrandomclassSolution:deffindKthLargest(self,nums:List[int],k:int)->int:# 将问题转化为寻找第n-k个最小元素k=len(nums)-kdefquickSelect(l,r):pivot,p=nums[r],l# 将小于等于pivot的元素移动到左侧foriinrange(l,r):ifnums[i]<=pivot:nums[p],nums[i]=nums[i],nums[p...
class KthLargestElementHeap { public int findKthLargest(int[] nums, int k) { PriorityQueue<Integer> pq = new PriorityQueue<>(); for (int num : nums) { pq.offer(num); if (pq.size() > k) { pq.poll(); } } return pq.poll(); }} 解法三 - Quick Sele...
You may assume k is always valid, 1 ≤ k ≤ array's length. 寻找一个数组中第k大的数。 1、建立一个大小为k的数组,每次维护这个数组,属于暴力做法。 publicclassSolution {publicintfindKthLargest(int[] nums,intk) {intlen =nums.length;int[] result =newint[k];for(inti = 0; i < k ; ...
/** * 基于快速选择排序 * 时间 O(n) 证明过程可以参考《算法导论》9.2 * 空间 O(nlongn) * * @param nums nums * @param k k * @return res */ public int findKthLargestWithQuickSelectSort(int[] nums, int k) { return quickSelect(nums, 0, nums.length - 1, nums.length - k); } ...
// 3)返回结果:数组中的第K个最大元素(即 nums[k - 1] )。 var findKthLargest = function(nums, k) { // 1)状态初始化:l = nums.length; 。 const l = nums.length; // 2)核心:2层for循环,i范围为 [0, k), j范围为 [i + 1, l) 。 for (let i = 0; i < k; i++) {...
Kth Largest Element in an Array Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. For example, Given [3,2,1,5,6,4] and k = 2, return 5. ...
public: intfindKthLargest(vector<int>&nums,intk) { } }; 已存储 行1,列 1 运行和提交代码需要登录 Case 1Case 2 nums = [3,2,1,5,6,4] k = 2 9 1 2 3 4 › [3,2,1,5,6,4] 2 [3,2,3,1,2,4,5,5,6] 4 Source
Can you solve this real interview question? Kth Largest Element in an Array - Given an integer array nums and an integer k, return the kth largest element in the array. Note that it is the kth largest element in the sorted order, not the kth distinct el
每一次划分都可以去确定一个元素的位置,也就知道比该元素小的元素数目。目测时间复杂度最差为 O(n^2),最好为O(1),平均?没动力做了...待做 算法: public int findKthLargest(int[] nums, int k) { Arrays.sort(nums); return nums[nums.length-k]; } 1. 2. 3. 4....
Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. Example 1: Input:[3,2,1,5,6,4]and k = 2 Output: 5 1. Example 2: Input:[3,2,3,1,2,4,5,5,6]and k = 4 ...